摘要
铜锌锡硫硒半导体材料组成元素储量丰富、绿色环保、稳定性高,由其制备的薄膜太阳能电池效率已接近15%的商业化基准线.然而,目前铜锌锡硫硒太阳能电池的研究主要集中于有效面积小于1 cm~2的单节电池,面向商业化应用的组件还未见报道.本文报道面积10.5 cm~2的铜锌锡硫硒太阳能电池组件,该组件基于二甲亚砜前体溶液法制备,效率达到4.25%.与单节电池相比,效率损失率为56.8%.扫描电子显微镜形貌及元素组成分析结果表明:通过激光(P1,P2)和机械(P3)划线成功实现了模块化和串联集成;溶液制备工艺在P1凹槽沉积了更厚的吸收层,有利于降低横向电荷传输电阻;在皮秒激光划线下未观察到吸收层材料的金属化.组件的成功制备将铜锌锡硫硒薄膜太阳能电池向实际应用推进了一步.
Kesterite structured copper zin tin sulfoselenides Cu2ZnSn(S,Se)4 are ideal green photovoltaic materials because of many advantages including earth-abundant and low toxic elemental compositional,tunable bandgap(1.0–1.5 eV),and high visible light absorption coefficient(>104 cm-1)[1,2].Recently,progress has been made for kesterite solar cells[3]and the efficiency of kesterite solar cell has reached 13.8%[4]and is approaching 15%commercial benchmark[5–7].However,the currently reported kersterite protocols are all based on single cells with effective area less than 1 cm2[8,9],which are not suitable for practical applications.Fabrication of kesterite modules(integrated and interconnected cells)[10]is the prime step to verify the potential of this new thin film photovoltaic technology for commercialization.
作者
袁明君
相春旭
严振
周鸿飞
刘乃云
魏淑霞
李伟
闫伟博
杨春雷
辛颢
Mingjun Yuan;Chunxu Xiang;Zhen Yan;Hongfei Zhou;Naiyun Liu;Shuxia Wei;Wei Li;Weibo Yan;Chunlei Yang;Hao Xin(State Key Laboratory for Organic Electronics and Information Displays,School of Chemistry and Life Sciences,Nanjing University of Posts&Telecommunications,Nanjing 210023,China;Center for Photonics Information and Energy Materials,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Department of Nano Science and Technology Institute,University of Science and Technology of China,Suzhou 215123,China)
基金
financially supported by the National Key Research and Development Program of China(2019YFE0118100)
the National Natural Science Foundation of China(U1902218)
the Major Basic Research Projects of the Shandong Province Natural Science Foundation(ZR2021ZD25)。
